Challenger Logo

Challenger App

Get it on Google PlayGet it on App Store
App Logo

No.1 PSC Learning App

★
★
★
★
★
1M+ Downloads
Get App
The speeds of two boats A and B in still water are 25 km/hr and 30 km/hr respectively. The boats are 165 km apart. If both begins moving toward each other, A going downstream while B upstream, then in how many hours they will meet?

A3 hours

B4 hours

C5 hours

D6 hours

Answer:

A. 3 hours

Read Explanation:

Let the speed of the current is S upstream speed of B is (30−S) and the downstream speed of A is (25+S). relative speed = (30−S) + (25+S) = 55 km/h Required time = Distance/Speed = 165/55 = 3 hour

Related Questions:

To go a certain distance of 40 km upstream a rower takes 8 hours while it takes her only 5 hours to row the same distance downstream. What was the rower’s speed in still water?
In one hour, a boat goes 11 km/hr along the stream and 5 km/hr against the stream. The speed of the boat in still water (in km/hr) is :
What is the time taken by a boat to travel 120km upstream and back to the starting point if the speed of the boat is 25 km/hr, and the speed of stream is 5km/hr?
A boatman goes 4 km against the current of the stream in 1 hour and goes 2 km along the current in 10 minutes. How long will it take to go 24 km in stationary water?
A man rows to a place 60 km distant and come back in 35 hours. He finds that he can row 4 km with the stream in the same time as 3 km against the stream. Find the speed in still water and in stream: